"You also repaired the TV station's transmitter?!" Fan Tongwen asked in surprise.

"Yes, the transmitter of the Jiancheng County TV station broke down a few years ago, and we helped them repair it. Hehe......" Zhong Min said with a smug smile.

Fan Tongwen glanced meaningfully at Wang Zhiyi and Xu Bin, and then asked Zhong Min:

"It is written in your information that you have provided technical support to the armed police force in the province, what is going on?"

Although the formation of the armed police force has not yet been officially made public and is not known to the public, leaders at all levels within the public security system are aware of this matter, because according to the state's plan for the formation of the armed police force at this time, the leadership system of the armed police force is referred to as "one unification and two divisions", that is, it is under the unified leadership of the State Council and the first country, and the public security organs in various localities are managed and commanded at different levels, but the "two divisions" are the mainstay, that is to say, the newly formed armed police forces at all levels will accept the management and command of the public security organs at all levels.

In April this year, the establishment of the armed police force will be officially announced, and at that time, in Xinchun City, there will be an armed police detachment under the management and command of the Xinchun City Public Security Bureau, and the Xinchun City Public Security Bureau has already made a lot of preliminary preparations for the arrival of the armed police force.

"It's nothing, we just built a few walkie-talkies and a radar detection equipment for Director Lei of the Equipment Department of the Provincial Armed Police Corps." Zhou Jianhua hurriedly interjected.

"You guys also fix this?! This is military equipment! Fan Tongwen couldn't help but exclaim.

"Huh...... I don't think they would let us fix it if they could fix it themselves. Zhou Jianhua replied with a smile:

"But they couldn't find anyone else in the province who could repair this equipment at that time, so of course they had to let us repair it......"

At this time, the radio used by the armed police force is the same as that of the PLA troops, and the wireless frequencies occupied cannot be used by other departments and units, even if it is not the public security department, so the communication equipment of the public security department cannot use the same radio station as the army, and can only use civilian frequencies and civilian equipment, which is of course also related to the requirements of military communication confidentiality, so, generally speaking, the communication equipment used by the army can only be produced and maintained by the military industry, if it is not a last resort, It is impossible to hand over the equipment of the troops to enterprises or individuals in society for maintenance.

"That's ......"

Fan Tongwen now finally understood the technical strength represented by these two young people.

Just now, this young man directly said the surname of the director of the equipment department of the Provincial Armed Police Corps, and it seems that this is true. Although Fan Tongwen was not such a director of Lei before, it is not difficult to contact him to confirm this matter, after all, it will be a brother unit managed and commanded by the public security system in the future.

If they can really have the technical strength to design and produce such an advanced and effective communication equipment as the advertising slogan says, then the development of police work in the future is likely to open up a completely different new situation, which is something that this department has been seeking for a long time.

Fan Tongwen looked at his watch again, and there were only twenty minutes left before the scheduled meeting time.

"That'...... What is the situation of "modern communication equipment that is leading in China and advanced in the world" written in your information? Fan Tongwen asked again after a little hesitation. Time was running out, and he had to cut straight to the point.

"This is a new type of wireless voice communication system designed by us, this system is actually a network system, through the distribution of several wireless transmitting and receiving base stations in urban and rural areas, they form a wireless communication network, in the range covered by this network, users can rely on the handheld small radio station and each base station to transmit the signal, each base station will transmit the voice signal of the handheld radio station to the central signal processing system." Zhong Min pointed to the sketches on the letterhead and explained to the three leaders:

"All the handheld small radio stations within the coverage of these base station networks can make voice contact with each other through this central signal processing system, just like we make a call, both can talk in pairs, and can also release voice information to more than two small handheld radios through the central console, which is very convenient. Because the transmitting and receiving base stations are set at a high place, not as good as the top of a building or even on the top of a mountain, and the signal strength is also relatively large, it covers a much wider range than the existing walkie-talkies of the public security department, and is much less affected by the terrain of large buildings and hills. ”

While explaining, Zhong Min was glad that he listened more carefully last night, and he basically understood the general principle of the voice call system that Zhou Jianhua said.

The system designed by Zhou Jianhua is actually a simplified version of the mobile phone base station system commonly used by public mobile communication enterprises in the future, which can only make voice calls and cannot communicate with data.

There are several reasons for this simplification, first of all, there are still very few digital integrated circuits in the world, not to mention the domestic, it is almost impossible to use a huge number of separated components to make a stable and reliable data communication module, and the use of discrete components and some analog integrated circuits to achieve voice communication is relatively easy to achieve;

The second is that at present, in China, computers are only used in individual scientific research units, and the vast majority of Chinese people have never heard of this thing, let alone the application of computers for data analysis and management.

Again, in order to reduce costs, simplifying functions and reducing the use of integrated circuit modules, especially imported high-end integrated circuit modules, which are still very scarce, will greatly reduce the cost of this system. In particular, the import of integrated circuit modules also need to use a large amount of foreign exchange, the current reform and opening up has just begun, the country urgently needs to import a large number of high-end equipment, the urgent shortage of foreign exchange, a private enterprise wants to obtain foreign exchange to engage in raw material imports, this is simply impossible!

"Hmmm! Sounds good! Fan Tongwen nodded happily, and immediately asked again:

"Like our Xinchun City, how much does it cost to build such a network to cover the suburbs?"

Zhong Min lowered his head and covered his nose with his hands, and coughed lightly twice.

"Like our Xinchun City, there are three base stations can basically cover the suburbs, each base station is about 15,000, and the central signal processing system needs about 20,000, so if you calculate it, a total of 65,000." Zhou Jianhua stepped forward and interjected:

"The 65,000 includes all the equipment costs, transportation costs, and installation and commissioning costs."

Zhong Min, who was covering his nose on the side, had not put down his hand, but at this time he suddenly turned around and coughed continuously, until his face was flushed before stopping.

Fan Tongwen heard Zhou Jianhua say that he wanted sixty-five thousand, frowned slightly, and said after a moment of silence:

"So be it. We've got a meeting coming up, so we'll talk about that in the morning. Come back at about three o'clock in the afternoon, and we'll talk about it. All right? ”

"Yes! Let's just buy a ticket to go back tomorrow. Zhou Jianhua agreed, and together with Zhong Min, he said goodbye to the three leaders and temporarily left the Public Security Bureau.

As soon as the two of them walked out of the gate of the Public Security Bureau, Zhong Min immediately couldn't help but pull Zhou Jianhua's sleeve and shouted excitedly:

"Sixty-five thousand! Why are there so many?! You're too bold! ”

"Is it much?" Zhou Jianhua glanced at Zhong Min with a smile and said:

"We're high-tech! Need to buy a lot of high-end professional components and equipment, the cost is very high......"

"I was so nervous that I thought you were wrong! Fortunately, Director Fan listened to your offer and didn't drive us out immediately, otherwise it would be too shameless! Zhong Min said with palpitations.

"Huh...... How could he be willing to drive us away...... But we have to hurry up, or we won't be able to go. Zhou Jianhua replied.

"What?!" Zhong Min asked nervously, and quickly turned his head to look behind, afraid that someone would chase after him.

"What are you nervous about?! I mean, we have to walk to the station now to buy tomorrow's ticket, and if we're late, I'm afraid we'll miss tomorrow morning's train again! Zhou Jianhua patted Zhong Min on the shoulder and said with a smile.

PS: Thank you "001frh" for your generous tip, and thank you to all the friends who voted for "Recommendation Votes"!